My Inquiry
My Account
Texas Instruments 74AVCA164245GRE4
- Part No.:
- 74AVCA164245GRE4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74AVCA164245GRE4.pdf
- Description:
- IC TRANSLATOR BIDIR 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,665
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74AVCA164245GRE4 from Texas Instruments is a 16-bit dual-supply bus transceiver with configurable voltage translation and 3-state outputs, designed for bidirectional level-shifting between 1.4-V to 3.6-V domains (e.g., 1.8-V ↔ 3.3-V buses). It features independent A/B ports tracking VCCA and VCCB, dynamic output control (DOC™) for noise reduction, Ioff support for partial-power-down mode, and ±24-mA drive at 2.5-V VCC. It is used in mixed-voltage FPGA-to-ASIC interconnects requiring isolation during power sequencing.
For engineers reviewing the 74AVCA164245GRE4 datasheet, 74AVCA164245GRE4 pinout, 74AVCA164245GRE4 application, or 74AVCA164245GRE4 equivalent, this page delivers verified electrical specs, TSSOP-48 package mapping, real-world use cases in voltage-agile systems, and two validated alternative parts with documented functional and interface differences.
Technical Context
The 74AVCA164245GRE4 implements a fully configurable dual-rail architecture: the A port tracks VCCA (1.4–3.6 V), the B port tracks VCCB (1.4–3.6 V), and all control inputs (1DIR, 2DIR, 1OE, 2OE) are referenced to VCCA. Its DOC™ circuitry dynamically modulates output impedance-lowering it during signal transitions for strong drive (±24 mA), then raising it to suppress switching noise.
Ioff protection disables outputs when either VCCA or VCCB is at GND, preventing backflow current during partial power-down. The device supports asynchronous bidirectional data flow per octal section: DIR = L enables B→A transmission; DIR = H enables A→B; OE = H forces high-impedance isolation on both ports.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage range (VCCA/VCCB) | 1.4 V to 3.6 V each - enables interoperability across 1.5-V, 1.8-V, 2.5-V, and 3.3-V logic domains without external level shifters. |
| Output drive (IOH/IOL) | ±24 mA at 2.5-V VCC - matches standard-output strength for driving heavy capacitive loads (e.g., >15-pF traces or multiple inputs). |
| Propagation delay (tpd) | 1.3 ns to 6.8 ns (min/max) - varies with supply pair (e.g., 1.8-V/2.5-V yields ~4.4 ns typical), supporting >100-MHz bus operation. |
| Ioff leakage | ±10 µA max when VCC = 0 V - ensures safe isolation during hot-insertion or staggered power-up sequences. |
| Input threshold reference | VIH/VIL tied to VCCA - eliminates need for external biasing; control logic operates reliably even if VCCB differs significantly from VCCA. |
| ESD rating | 2000-V HBM, 200-V MM, 1000-V CDM - exceeds JEDEC JESD22 standards for robustness in handling and board assembly. |
| Operating temperature | –40°C to +85°C - qualified for industrial-grade embedded systems including motor drives and communications infrastructure. |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.1 mm × 1.2 mm body, 0.5-mm pitch, lead-free (NiPdAu), MSL Level-1, RoHS compliant. Pin 1 marked by beveled corner; gage plane defined per JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per octal section) | Determines data flow direction: DIR = L → B→A; DIR = H → A→B; referenced to VCCA. |
| 1OE, 2OE | Output enable input (per octal section) | OE = H → high-impedance state on associated port; OE = L → active drive; pull-up to VCCA recommended for power-up safety. |
| 1A1–1A8, 2A1–2A8 | A-port data I/O (octal groups) | Track VCCA supply; tolerate up to VCCA + 0.5 V; support mixed-voltage input detection. |
| 1B1–1B8, 2B1–2B8 | B-port data I/O (octal groups) | Track VCCB supply; tolerate up to VCCB + 0.5 V; electrically isolated from A-port logic domain. |
| VCCA, VCCB | Independent power rails | Each powers its respective port and internal logic; no internal connection between rails - enables true dual-supply operation. |
| GND (pins 4,10,15,21,26,32,37,43) | Ground terminals | Eight dedicated ground pins minimize ground bounce and improve noise immunity in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail voltage translation | Independent 1.4–3.6-V operation on A and B ports allows seamless bridging of 1.8-V microcontrollers to 3.3-V peripherals without external resistors or translators. |
| Dynamic Output Control (DOC™) | Reduces simultaneous switching noise by lowering output impedance only during edge transitions - maintains signal integrity without sacrificing speed. |
| Ioff partial-power-down protection | Prevents damaging current flow when one rail is unpowered (e.g., VCCA = 0 V while VCCB = 3.3 V), critical for hot-swap and modular system designs. |
| Overvoltage-tolerant I/O | Withstands up to VCCX + 0.5 V on active outputs and 4.6 V on powered-down I/O - simplifies system-level ESD protection and avoids clamping diode requirements. |
| Control-input referencing | All DIR/OE inputs referenced to VCCA - eliminates need for level-shifted control signals when VCCA ≠ VCCB, reducing component count and layout complexity. |
Applications
| Industrial PLC Backplane Interconnect | FPGA-to-ASIC Voltage-Agile Interface |
|---|---|
Use Scenario: Connecting a 1.8-V FPGA I/O bank to a 3.3-V ASIC on a programmable logic controller backplane with strict EMI limits. IC Role / Device Role / Timing Role: Bidirectional level translator and bus isolator; manages direction via FPGA GPIO, enables/disables per slot using CPLD-controlled OE signals. Use Value: DOC™ reduces ground bounce-induced timing jitter; Ioff prevents backfeed during hot-plug insertion of field modules. |
Use Scenario: Enabling communication between a 2.5-V SoC and legacy 1.5-V sensor hub in an automotive ADAS domain controller. IC Role / Device Role / Timing Role: Asynchronous voltage translator with independent DIR/OE per octet; synchronizes data handshaking via SoC-controlled DIR lines. Use Value: Dual-supply flexibility eliminates need for discrete level-shifter arrays; ±24-mA drive ensures reliable setup/hold margins over 10-cm PCB traces. |
| Server Memory Subsystem Buffer | Test Equipment Signal Conditioning Module |
Use Scenario: Isolating DDR3 memory controller (1.5-V) from DIMM slots (1.35-V LPDDR3) in a high-density server motherboard with thermal constraints. IC Role / Device Role / Timing Role: Low-power bidirectional buffer with VCCA = 1.5 V and VCCB = 1.35 V; OE asserted during memory refresh cycles to decouple channels. Use Value: 1.4-V minimum supply enables operation at LPDDR3 voltages; low ICCA/ICCB (<40 µA) minimizes standby power in multi-channel configurations. |
Use Scenario: Adapting test pattern generator outputs (3.3-V LVCMOS) to DUT inputs requiring 1.8-V swing in automated test equipment (ATE) load boards. IC Role / Device Role / Timing Role: Precision voltage translator with sub-2-ns tpd variation; DIR fixed, OE toggled per test vector to gate stimulus delivery. Use Value: Tight propagation delay matching (<0.5 ns skew across 16 bits) ensures deterministic timing alignment; 5-pF Cio preserves signal rise/fall fidelity at 100+ MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVCB164245GR | Supports 1.2–3.6-V range on both rails (wider than 74AVCA164245GRE4's 1.4–3.6 V); identical pinout and DOC™ behavior. | Required for 1.2-V I/O domains (e.g., advanced mobile SoCs); not needed for industrial 1.5/1.8/2.5/3.3-V systems. | Select SN74AVCB164245GR only if interfacing to sub-1.4-V logic; otherwise 74AVCA164245GRE4 offers better noise margin at 1.4-V minimum. |
| SN74LVC164245DGGR | Single-supply (1.65–3.6 V); no dual-rail translation; lower drive (±24 mA only at 3.3 V), no Ioff or DOC™. | Suitable only when both sides share same VCC; lacks isolation during rail mismatch or power sequencing events. | Choose SN74LVC164245DGGR for cost-sensitive, single-voltage designs where power sequencing is controlled externally; avoid when VCCA ≠ VCCB or hot-swap is required. |
Compared with SN74AVCB164245GR, the 74AVCA164245GRE4 trades 0.2-V lower minimum supply for tighter VIH/VIL thresholds and improved noise immunity at 1.4–1.6 V. Against SN74LVC164245DGGR, it adds essential dual-rail flexibility, Ioff safety, and DOC™-enabled signal integrity - making it irreplaceable in mixed-voltage industrial and automotive interfaces.
Availability
74AVCA164245GRE4 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA-to-ASIC interconnects, server memory subsystems, and ATE signal conditioning modules requiring stable component supply across extended temperature and mixed-voltage operating conditions.
Supply support for 74AVCA164245GRE4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in logic interface solutions and industrial-grade reliability.
The AVCA-series transceivers were developed specifically for voltage-agile system interconnects in industrial automation and communications infrastructure, emphasizing robust power sequencing, wide supply tolerance, and noise-aware output drive.
FAQ
What is the minimum operating voltage for VCCA and VCCB on the 74AVCA164245GRE4?
The 74AVCA164245GRE4 supports a minimum supply voltage of 1.4 V on both VCCA and VCCB rails, enabling reliable operation with 1.5-V and 1.8-V logic families. Operation below 1.4 V is not characterized or guaranteed - attempting to power either rail at 1.2 V may result in undefined logic states or increased static current.
Does the 74AVCA164245GRE4 support hot-swap or partial-power-down scenarios?
Yes, the 74AVCA164245GRE4 includes Ioff circuitry that disables outputs and limits leakage to ±10 µA when either VCCA or VCCB is at GND, preventing damaging current backflow during hot-insertion or staggered power-up. This makes the 74AVCA164245GRE4 suitable for modular chassis and field-replaceable unit designs.
How does the Dynamic Output Control (DOC™) feature improve signal integrity in the 74AVCA164245GRE4?
DOC™ in the 74AVCA164245GRE4 lowers output impedance only during signal transitions to deliver peak drive strength (±24 mA), then raises it to reduce ringing and ground bounce. This results in cleaner edges and lower simultaneous switching noise compared to fixed-drive transceivers - directly improving timing margin in dense PCB layouts.
Can control inputs (DIR, OE) be driven from a different voltage than VCCA on the 74AVCA164245GRE4?
No - the 74AVCA164245GRE4 specifies that all control inputs (1DIR, 2DIR, 1OE, 2OE) must be referenced to VCCA. Driving them from VCCB or another rail violates the datasheet's VIH/VIL thresholds and risks metastability or excessive input current. Pull-up resistors to VCCA are recommended for OE during power-up.
What package type and moisture sensitivity level (MSL) does the 74AVCA164245GRE4 use?
The 74AVCA164245GRE4 uses a TSSOP-48 (DGG) package with 0.5-mm pitch and is rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH), meaning it can be stored and assembled without dry-pack or baking - simplifying manufacturing logistics versus higher-MSL alternatives like VFBGA variants.
74AVCA164245GRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AVCA
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 2
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 1.4 V ~ 3.6 V
- Voltage - VCCB:
- 1.4 V ~ 3.6 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFSOP (0.240", 6.10mm Width)
74AVCA164245GRE4 FAQ
1.How can I place an order for 74AVCA164245GRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AVCA164245GRE4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74AVCA164245GRE4 reliable?
The price and inventory of 74AVCA164245GRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AVCA164245GRE4 is usually 5 days.
3.What payment methods are accepted for 74AVCA164245GRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AVCA164245GRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AVCA164245GRE4?
74AVCA164245GRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AVCA164245GRE4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74AVCA164245GRE4?
For technical support, including 74AVCA164245GRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AVCA164245GRE4 requirements.
6.How does Aetrix verify that 74AVCA164245GRE4 is sourced from the original manufacturer or authorized distributors?
All 74AVCA164245GRE4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74AVCA164245GRE4 meets industry standards.
7.What is the process for return or replacement of 74AVCA164245GRE4?
All 74AVCA164245GRE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74AVCA164245GRE4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74AVCA164245GRE4 part is unused and in its original packaging.
Return procedure for 74AVCA164245GRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AVCA164245GRE4 Tags
-
74LVC1T45GW,125
Nexperia USA Inc.
-
74LVCH2T45DC,125
Nexperia USA Inc.
-
SN74LVC1T45DBVR
Texas Instruments
-
SN74LVC1T45DRLR
Texas Instruments
-
SN74LVC1T45DPKR
Texas Instruments
-
SN74LVC2T45DCTR
Texas Instruments
-
74LVC2T45GT,115
Nexperia USA Inc.
-
SN74LVC1T45YZPR
Texas Instruments
-
LSF0102DCUR
Texas Instruments
-
SN74LVC1T45DCKR
Texas Instruments
-
TXS0102DCTR
Texas Instruments
-
FXLP34P5X
onsemi
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
